MAX25252
RECOMMENDED FOR NEW DESIGNSFive-Output ASIL B PMIC with Accurate Temperature Monitoring for Next-Generation Camera Sensors
- Part Models
- 4
- 1ku List Price
- Starting From $2.62
Overview
- Multiple Functions for Small Size
- 1A Synchronous High-Voltage Buck Converter
- Input Voltage Range 3.5V to 22V
- 2.5V to 5V Output Voltage in 100mV Steps
- Two Synchronous Low-Voltage Buck Converters
- Delivers up to 1.7A Current
- 0.75V to 3.9375V Output Voltage in 12.5mVSteps
- High-PSRR, Low-Voltage LDO for Camera Sensor
- Delivers up to 0.4A Current
- 0.75V to 3.9375V Output Voltage in 12.5mVSteps
- Low-Voltage LDO
- Delivers up to 0.9A Current
- 0.75V to 3.9375V Output Voltage in 12.5mVSteps
- 2.1MHz Operation
- RESET Output for OV/UV Detection and OtherDiagnostics
- SUP Voltage OV/UV Indication
- 1A Synchronous High-Voltage Buck Converter
- High Precision for ASIL B Applications
- ±1.5% Output Voltage Accuracy (OUT1-OUT5)
- ±1% OV/UV Monitoring Accuracy
- High-Precision Temperature Monitoring
- 12-Bit ADC for Accurate Board Temperature
- ±0.096% Voltage Measurement Accuracy
- Robust for the Automotive Environment
- ASIL B Compliant
- Current-Mode, Forced-PWM Operation
- Overtemperature and Short-Circuit Protection
- 5mm x 5mm, 28-Pin Side-Wettable TQFN
- -40°C to +125°C Automotive Temperature Range
- AEC-Q100 Qualified
The MAX25252 is a high-efficiency, five-output ASIL B PMIC with three DC-DC converters, and two high-PSRR LDOs, with OV/UV monitoring on all outputs. OUT1 is a 1A high-voltage, synchronous step-down converter operating from power over coax. OUT2 and OUT3 are low voltage synchronous step-down converters and provide a 0.75V to 3.9375V output voltage range. OUT2 and OUT3 can deliver up to 1.7A current respectively for the high-megapixel cameras and high-speed serializers. LDO4 and LDO5 deliver up to 0.4A and 0.9A of current to power the secondary rails of the imager and a serializer. All outputs achieve ±1.5% output accuracy over load, line, and temperature range. Overvoltage and undervoltage for each output are monitored and their statuses are communicated through RESET and I2C.
The device features temperature monitoring with external NTC. The IC accurately measures PCB temperature and flags the temperature warning through RESET.
The device features a 2.1MHz fixed-frequency PWM mode for better noise immunity and load transient response. The 2.1MHz frequency operation allows for the use of all ceramic capacitors and minimizes external components. The programmable spread-spectrum frequency modulation minimizes radiated electromagnetic emissions.
The I2C programmable output voltages and sequencing increases flexibility for different image sensors and configurations. Other features include soft-start, overcurrent, and overtemperature protections.
Applications
- Surround-View Cameras
- Rear-View Cameras
- Side-View Cameras
- Forward-Looking Cameras
Documentation
Data Sheet 1
Request an NDA
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA).
Request an NDAADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX25252ATIA/VY+ | LFCSP | ||
| MAX25252ATIA/VY+T | LFCSP | ||
| MAX25252ATIAK/VY+ | LFCSP | ||
| MAX25252ATIAK/VY+T | LFCSP |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
Software Development 1
LTpowerPlay®
LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.
Open ToolEvaluation Kits
MAX25252 Evaluation Kit